CVE-2021-4083
High
Description
A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers in the way users call close() and fget() simultaneously and can potentially trigger a race condition. This flaw allows a local user to crash the system or escalate their privileges on the system. This flaw affects Linux kernel versions prior to 5.16-rc4.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Linux Kernel
PublishedJan 18, 2022
First seenJan 18, 2022
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel4.4.294, 4.9.292, 4.14.257, 4.19.220, 5.4.164, 5.10.84, 5.15.7 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 4.4.294, 4.5 ≤ v < 4.9.292, 4.10 ≤ v < 4.14.257, 4.15 ≤ v < 4.19.220, 4.20 ≤ v < 5.4.164, 5.5.0 ≤ v < 5.10.84, 5.11 ≤ v < 5.15.7, 5.16 | 4.4.294, 4.9.292, 4.14.257, 4.19.220, 5.4.164, 5.10.84, 5.15.7 |
| netapp h410c_firmware | No range specified | — |
| netapp h300s_firmware | No range specified | — |
| netapp h500s_firmware | No range specified | — |
| netapp h700s_firmware | No range specified | — |
| netapp h300e_firmware | No range specified | — |
| netapp h500e_firmware | No range specified | — |
| netapp h700e_firmware | No range specified | — |
| netapp h410s_firmware | No range specified | — |
| debian debian_linux | 9.0, 10.0 | — |
| netapp hci_management_node | No range specified | — |
| netapp solidfire | No range specified | — |
| oracle communications_cloud_native_core_binding_support_function | 22.1.3 | — |
| oracle communications_cloud_native_core_network_exposure_function | 22.1.1 | — |
| oracle communications_cloud_native_core_policy | 22.2.0 | — |
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